I have seen pictures of 12 71 hemi cuda convertibles including that one that popped up in Canada last year. As far as building one, I know a guy who has a real 71 hemi cuda convertible and then built another one thats a clone the way he would have ordered one new but installed a 528 crate hemi in it. But he has many real hemi cudas mostly 71's and he is a great guy and down to earth.